[PATCH] D47196: [Time-report ](2): Recursive timers in Clang

[Andrew V. Tischenko via Phabricator via cfe-commits]

avt77 added a comment.

In https://reviews.llvm.org/D47196#1190377, @efriedma wrote:

> I mean, which of the callers of startFrontendTimer() is calling it with a pointer to std::declval()?


F6951300: declval.log <https://reviews.llvm.org/F6951300>

The attachment keeps debug output for

....../bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name TransGCCalls.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -v -v -coverage-notes-file /home/atischenko/workspaces/bootstrap/Release-patch/tools/clang/lib/ARCMigrate/CMakeFiles/clangARCMigrate.dir/TransGCCalls.cpp.gcno -resource-dir /home/atischenko/workspaces/time-report-recursive-4/RelWithDebug/lib/clang/8.0.0 -D GTEST_HAS_RTTI=0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /home/atischenko/workspaces/bootstrap/Release-patch/tools/clang/lib/ARCMigrate -I /home/atischenko/workspaces/bootstrap/llvm/tools/clang/lib/ARCMigrate -I /home/atischenko/workspaces/bootstrap/llvm/tools/clang/include -I /home/atischenko/workspaces/bootstrap/Release-patch/tools/clang/include -I /usr/include/libxml2 -I /home/atischenko/workspaces/bootstrap/Release-patch/include -I /home/atischenko/workspaces/bootstrap/llvm/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/backward -internal-isystem /usr/local/include -internal-isystem /home/atischenko/workspaces/time-report-recursive-4/RelWithDebug/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -Woverloaded-virtual -Wno-nested-anon-types -pedantic -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /home/atischenko/workspaces/bootstrap/Release-patch/tools/clang/lib/ARCMigrate -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -ftime-report -fno-rtti -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -o TransGCCalls.cpp.o -x c++ /home/atischenko/workspaces/bootstrap/llvm/tools/clang/lib/ARCMigrate/TransGCCalls.cpp -faddrsig -mllvm -debug-only=ftiming

The full log is too big that's why I grepped "declval" only:

- :start: means the timer was started
- :stop-zero: means the timer was stopped and nothing was added to the calculated time period
- :stop-add:<double> means the timer was stoped and the time slice was added to the time period.

There are DeclFunc* names and Tags to look for corresponding RAII objects inside sources. For example:

ActOnFunctionDeclarator:start:declval:

means

Tag:start:Name:

BTW, I see a lot of broken DeclFunc names: do you have any idea why it's possible? Example:

ActOnFunctionDeclarator:start:....._exception:

Here  ...... means non-ASCII symbols.


https://reviews.llvm.org/D47196